Package: github.com/parquet-go/parquet-go/compress/zstd

package zstd Import Path github.com/parquet-go/parquet-go/compress/zstd (on go.dev) Dependency Relation imports 3 packages, and imported by one package

Involved Source Files d zstd.go Package zstd implements the ZSTD parquet compression codec.

Package-Level Type Names (total 2)

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type Codec (struct) Fields (total 2) Concurrency uint Concurrency is the number of CPU cores to use for encoding and decoding. If Concurrency is 0, it will use DefaultConcurrency. Level Level Methods (total 4) (*Codec) CompressionCodec() format.CompressionCodec (*Codec) Decode(dst, src []byte) ([]byte, error) (*Codec) Encode(dst, src []byte) ([]byte, error) (*Codec) String() string Implements (at least 3) *Codec : github.com/parquet-go/parquet-go/compress.Codec *Codec : expvar.Var *Codec : fmt.Stringer As Types Of (only one) var github.com/parquet-go/parquet-go.Zstd

type Level = zstd.EncoderLevel (basic type)

Package-Level Constants (total 6)

const DefaultConcurrency = 1

const DefaultLevel zstd.EncoderLevel = 2

const SpeedBestCompression zstd.EncoderLevel = 4 SpeedBestCompression will choose the best available compression option. This will offer the best compression no matter the CPU cost.

const SpeedBetterCompression zstd.EncoderLevel = 3 SpeedBetterCompression will yield better compression than the default. Currently it is about zstd level 7-8 with ~ 2x-3x the default CPU usage. By using this, notice that CPU usage may go up in the future.

const SpeedDefault zstd.EncoderLevel = 2 SpeedDefault is the default "pretty fast" compression option. This is roughly equivalent to the default Zstandard mode (level 3).

const SpeedFastest zstd.EncoderLevel = 1 SpeedFastest will choose the fastest reasonable compression. This is roughly equivalent to the fastest Zstandard mode.